/* Mastermind page */
.game-layout { display: grid; gap: clamp(1.5rem, 4vw, 3rem); grid-template-columns: minmax(0, 30rem) minmax(0, 1fr); align-items: start; }
@media (max-width: 900px) { .game-layout { grid-template-columns: 1fr; } }

.peg {
  --c: transparent;
  display: inline-grid; place-items: center;
  width: clamp(2.1rem, 9vw, 2.6rem); aspect-ratio: 1; border-radius: 50%;
  background: radial-gradient(circle at 32% 28%, rgba(255,255,255,.55), transparent 42%), var(--c);
  color: rgba(12, 6, 20, .75); font: 700 .85rem/1 var(--mono);
  box-shadow: inset 0 -3px 0 rgba(0,0,0,.25), 0 0 14px -4px var(--c);
  flex: none;
}
.peg.empty { background: rgba(255,255,255,.03); border: 2px dashed var(--line); box-shadow: none; }
.peg.hidden { background: var(--plum-2); border: 2px solid var(--violet); color: var(--violet-hi); box-shadow: none; }
.peg.sm { width: 1.35rem; font-size: .62rem; box-shadow: inset 0 -2px 0 rgba(0,0,0,.25); }
.chips { display: inline-flex; gap: .2rem; vertical-align: middle; }

.secret-row { display: flex; align-items: center; gap: .9rem; padding: .9rem 1rem; border: 2px solid var(--violet); background: var(--plum); margin-bottom: .75rem; }
.secret-row .label { font: 700 .7rem/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--violet-hi); margin-right: auto; }
.secret-row .slots { display: flex; gap: .45rem; }

.board { list-style: none; margin: 0; padding: 0; border: 1px solid var(--line); }
.row { display: grid; grid-template-columns: 2rem auto auto 1fr; align-items: center; gap: .75rem; padding: .45rem .8rem; border-bottom: 1px solid var(--line); }
.row:last-child { border-bottom: 0; }
.row.active { background: rgba(203, 216, 111, .05); box-shadow: inset 3px 0 0 var(--neon); }
.row .turn { font: 500 .72rem/1 var(--mono); color: var(--muted); }
.row.active .turn { color: var(--neon); }
.row .slots { display: flex; gap: .45rem; }
.row .meta { font: 400 .72rem/1.3 var(--mono); color: var(--violet-hi); text-align: right; }
.slot-btn { background: none; border: 0; padding: 0; cursor: pointer; border-radius: 50%; }

.keys { display: inline-grid; grid-template-columns: repeat(2, .62rem); gap: .22rem; }
.keys.placeholder { width: calc(1.24rem + .22rem); }
.key { width: .62rem; height: .62rem; border-radius: 50%; }
.key.exact { background: #fff; box-shadow: 0 0 6px rgba(255,255,255,.6); }
.key.near { border: 2px solid #fff; }
.key.none { background: rgba(255,255,255,.08); }
.legend { display: flex; flex-wrap: wrap; gap: 1rem; font: 400 .78rem/1 var(--mono); color: var(--muted); margin: .75rem 0 0; }
.legend span { display: inline-flex; align-items: center; gap: .4rem; }

.palette { display: flex; flex-wrap: wrap; gap: .55rem; margin: 1rem 0; }
.palette button { background: var(--plum); border: 1px solid var(--line); border-radius: var(--radius); padding: .4rem; cursor: pointer; }
.palette button:hover:not([disabled]) { border-color: var(--neon); }
.palette button[disabled] { opacity: .4; cursor: not-allowed; }
.controls { display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; }

.status { min-height: 3.2em; margin: 1rem 0 .25rem; font-size: .98rem; }
.stats-line { font: 400 .75rem/1.4 var(--mono); color: var(--muted); }

.side .card + .card { margin-top: 1rem; }
.switch { display: flex; align-items: center; gap: .6rem; font: 500 .8rem/1 var(--mono); text-transform: uppercase; letter-spacing: .1em; cursor: pointer; }
.switch input { accent-color: var(--neon); width: 1.1rem; height: 1.1rem; }
select {
  font: 500 .85rem/1 var(--mono); color: var(--text); background: var(--plum);
  border: 1px solid var(--line); border-radius: var(--radius); padding: .65rem .6rem; max-width: 100%;
}
.big-num { font: 400 3rem/1 var(--display); color: var(--neon); }
.cand { list-style: none; padding: 0; margin: .75rem 0 0; display: flex; flex-wrap: wrap; gap: .5rem .9rem; }
.how kbd { color: var(--neon); }
.solve-pick { display: flex; gap: .45rem; margin: .75rem 0 1rem; }
.toc { columns: 2 14rem; font-size: .95rem; padding-left: 1.2rem; }

/* Difficulty switch */
.mode-switch { display: inline-flex; border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 1rem; overflow: hidden; }
.mode-switch button { background: none; border: 0; color: var(--muted); padding: .65rem 1rem; cursor: pointer; font: 700 .78rem/1.1 var(--mono); letter-spacing: .1em; text-transform: uppercase; text-align: left; }
.mode-switch button + button { border-left: 1px solid var(--line); }
.mode-switch small { display: block; font-weight: 400; font-size: .64rem; letter-spacing: .06em; text-transform: none; opacity: .8; margin-top: .2rem; }
.mode-switch button[aria-pressed="true"] { background: var(--neon); color: var(--ink); }

/* Easy mode: one marker under each slot */
.slot { display: inline-flex; flex-direction: column; align-items: center; gap: .3rem; }
.mark { display: block; width: 1.5rem; height: .32rem; border-radius: 2px; }
.mark.exact { background: var(--neon); }
.mark.near { border: 2px solid var(--neon); height: .4rem; }
.mark.none { background: rgba(255, 255, 255, .12); }
.mark.blank { background: transparent; }
.legend .mark { display: inline-block; }
#game[data-mode="easy"] .legend-hard, #game[data-mode="hard"] .legend-easy { display: none; }

/* Citations */
.cite { font: 500 .62em/0 var(--mono); margin-left: .1em; }
.cite a { text-decoration: none; }
.refs { padding-left: 1.6rem; font-size: .9rem; color: var(--muted); }
.refs li { margin-bottom: .7rem; padding-left: .25rem; }
.refs li:target { color: var(--text); background: rgba(203, 216, 111, .07); }
.refs a { word-break: break-all; }